Home / 5,105.87-7,659.26-1,408.02

Finding the Fourth Proportional to 5,105.87, 7,659.26 and 1,408.02

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Solution

The fourth proportional to 5,105.87, 7,659.26 and 1,408.02 is: 2,112.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.87 : 7,659.26 = 1,408.02 : x
  2. Step 2: Convert to fraction form
    5,105.87/7,659.26 = 1,408.02/x
  3. Step 3: Cross multiply
    5,105.87x = 7,659.26 × 1,408.02
  4. Step 4: Simplify right side
    5,105.87x = 10,784,360.78
  5. Step 5: Solve for x
    x = 10,784,360.78/5,105.87
  6. Step 6: Final answer
    x = 2,112.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.